timberland mount holly tall boot Analysis on Gearb

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- air temperature too low, the lubricant solidified, resulting in parts of lubricant can not reach the required lubrication caused by wear and tear
- lubricant heat is not good, often overheated, causing damage to machinery lubrication failure early engagement surface
- filter plug, oil level sensor contamination, lubricant
2, the design flaw
of wind farm wind turbines installed in the majority of imported units. In recent years, a number of gearbox failure, and some replacement by the manufacturers, and some by domestic professional factory gear box was repaired. Some wind up gear box failure rate of 40 to 50%,ugg boots grey, very few brands unit gear box replacement rate is almost close to 100%. Although the gear box appears damaged not only in China, also occurred in many parts of the world, but in our current wind turbine failures in the run accounted for a large proportion, should be carefully analyzed.
3) in northern China, the winter temperature is too low,designer discount handbags 瘦腹汤排毒减肥本来如斯, some of the extreme wind (short) the minimum temperature reached -40 ℃ below the minimum design wind turbine operating temperature -20 ℃ or more,north face evolution triclimate 一个“傻子”与DNF, individual low-temperature wind generator low as -30 ℃. If you run a long time at low temperatures, wind turbines in the damaged parts, such as gear boxes. Therefore, the gear must be heated. Heating gear box a long time because when the wind speed is low or when the wind stops, gear oil temperature is too low due to become very thick, especially to take part splash lubrication, the lubrication can not be fully, resulting in gear or bearing short-term lack of lubrication and damage. If the cabin temperature is low, then the pipeline flows in poor lubrication problems also occur, so that when the gear box oil does not reach the radiator through the pipe, gear oil temperature will keep rising until the shutdown.

1, caused by poor lubrication of gear box tooth, premature bearing wear

2) in some areas because of topography,timberland winter boots for women, climate, special characteristics compared with Europe, the standard design may be the normal operation of the gear box has a certain impact. Most of China's wind farm in the mountainous or hilly areas, especially along the southeast coast and islands, complex terrain caused by the topography occurred Kawasaki flow changes, resulting in the addition level of wind turbines on stream but also have a radial flow component. Flow of a considerable portion of the gust factor region a greater impact,tory burch jelly flip flops, for the wind turbine mechanical power transmission system, the often exceed their design limits conditions. As power transmission devices - gear box, due to the instability of air flow, resulting in a complex gearbox long-term work under alternating load. Since the equipment installed in tens of meters high altitude, can not easily be sent to the factory maintenance, so regular state monitoring can discover problems in time, can also be a sign of failure to complete from the time of failure to timely arrangements for inspection.
sum up, we can analyze the wind farm in our frequent gear box failure may be mainly for the following reasons:
1) the last small-capacity wind turbine gear box to use more parallel to the growth structure of helical gear,timberland mount holly tall boot, gear box in order to avoid the cost was too high, the weight of the volume is too large,gold flat tory burch shoes, 500kW wind turbine above the gear box are mostly parallel to the axis planetary gear hybrid structure. As wind turbine capacity is increasing, the hub height increases, the gear box is complicated by the force, so that might cause some gear box is defective in design.
generally calculate the carrying capacity of gears in accordance with ISO6336 (Germany standard DIN3990) for. When unable to obtain empirical data from the actual operation, the manufacturer may use the application factor of 1.3 KA, but in fact the instability due to wind load,cheap tory burch bags 【可怕休息站Ⅰ】, so has the design and the actual deviation, causing the surface of gear surface bite load is too large or fatigue damage. Note When you select application factor of 1.3 KA, the gear drive chain, according to assumptions far exceed the design load value. If the inappropriate choice of bearing, the axial load is quite large, causing bearing damage.